Gas-heated sad-iron.



J. A. WBRTZ.

` GAS HEATBD SAD IRON.

PPPPPPPPPPPPPPPPP BB. 111111 9. 966,1449 Patented Aug.2,1910.

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GAS HEATED SAD IRON.

APPLICATION HLBD rms. 19, 1909.

966,144. Patented Augnz, 1910. v 2 SHEETS-SHEET. 2.

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NTTED STATES PATENT OFFICE.

JOHN A. WERTZ, OF CANTON, OHIO.

GAS-HEATED SAD-IRON.

Application led February 19, 1909.

To all whom it may concern:

Be it known that I, JOHN A. VERTZ, a citizen of the United States,residing at Canton, in the county of Stark and State of (hio, haveinvented a new and useful Graslleated Sad-Iron, of which the followingis a specification.

My invention relates to improvements in self-heated sad irons andparticularly to that class of such irons as are heated by means of gasconducted to said irons through a suitable flexible tube; and theobjects of my improvement are to improve the heating efliciency of saidirons, to provide a gas heated sad iron in which the flame will be soinclosed as to eliminate danger of fire, to insure perfect combustion byan -appropriate mixture of air and gas, to provide for automaticallycooling the top of said iron so as to relieve the operator from exposureto unnecessary heat and to provide for the proper distribution of theflame and hot air and to allow for the expansion of said air in theinterior of said iron. These objects, together with other objectsreadily apparent to those skilled in the art, I attain by theconstruction illustrated in the accompanying drawing, in whicha Figure 1is a transverse sectional view through the iron. Fig. 2 is alongitudinal sectional view through the point or front end of the iron,the greater part of the iron being broken away. Fig. 3 is a sideelevation of the iron, a portion of the valve and mixer being brokenaway to more fully disclose the construction. Fig. 4 is an edge view ofthe iron cap. Fig. 5 is an edge view of the asbestos lining. Fig. 6 isan edge view of the Ventilating plate. Fig. 7 is a top view of theventilating plate. Fig. 8 is a side view of the body of the iron. Fig. 9is a top view of the body of the iron, the cap, asbestos lining andventilating plate being removed.

Throughout the several views similar numerals of reference indicatesimilar parts.

The body of the iron 1 is preferably cast in one piece and is providedwith the bottom 2 and the sides 3, which are continuous around theentire body of the iron without lateral break or aperture. The top ofthe body of the iron is open and the interior thereof is hollow andsubstantially elliptical in shape, as illustrated in Fig. 9. At thefront end of the body of the iron on the in- Specficaton of LettersPatent.

Patented Aug. 2, 1910.

Serial No. 478,882.

terior thereof the integral base portion 4 is provided in which isarranged a screw threaded aperture, 5, for the purpose hereinafterdisclosed, and from which arises the rearwardly extending partition 6,which is not arranged in the median or axial line of the iron body, butis nearer to one of the sides than to the other, for the purposehereinafter more fully disclosed. The said partition also does notextend entirely to the rear of the iron but terminates at the point 7.The interior of the iron is thus divided into three principal divisionsor spaces, the divison 8, less than the division 9, said divisions S and9 extending from the sides of the iron to the partition 6, and thedivision 10 at the rear of the partition 6 extending entirely from sideto side of the iron and forming the continuation of and the connectionbetween the divisions 8 and 9. At the rear of the iron the base 11 isprovided, in which is arranged a screw threaded aperture, 12, for thepurpose hereinafter more fully disclosed.

The Ventilating plate 14 is of the form illustrated in Fig. 7 and isadapted to be arranged inside of the sides 3 and to rest upon the topsurface of the base portion 4, the partition 6 and the base 11. The saidVentilating plate is preferably cast in a single piece. The relativemaximum thickness of said plate being illustrated in Fig. G. The saidthickness illustrated in Fig. 6 is maintained entirely around the edgeof said ventilating plate with the exception of the rear end, where saidplate is cut away for a portion of its thickness, as illustrated at 15in Fig. 7. The plate is also partially cut away for a considerableportion of its area, as indicated at 16, leaving the reduced portion 17,forming a thinner wall or plate at the bottom of said cut away portion.The aperture 1S extends entirely through the plate 14 for the purpose ofaffording communication with the stack, as hereinafter more fullydisclosed. The aperture 19 also extends through said plate into theinterior of the iron, Other apertures, 20, extend through the reducedportion of the plate and provide communication between the interiorofthe iron and an extension of the cut away portion of the ventilatingplate, said extension being numbered 21. From an inspection of thedrawings it will be noted that the said apertures 2O extend through thelower surface of the plate 14 at the point in the division 8 near thelocation of the burner, to be hereinafter more fully described. Throughthe plate 14 the apertures 22 are also arranged for the accommodation ofthe screws for holding the said plate 14, asbestos lining 23 and ironcap 24 to the body of the iron.

The asbestos lining is of the form indicated by the peripheral lines ofthe ventilatA ing plate illustrated in F ig. 7 and forms the top orcovering for the ventilating plate. Suitable apertures are arranged insaid asbestos lining registering with the apertures 18, 19 and 22 in theventilating plate.

The iron cap 24 is of the same form and shape as the asbestos lining butis of greater thickness. 1t is provided with apertures registering withthe apertures 18, 19 and 22 as in the case of the asbestos lining. r1`hesaid iron cap is preferably7 formed of' metal and is intended for thetop or upper external side of the iron body.

lating plate, asbestos lining and iron cap are assembled in their properrelative posi tions the reduced portion 17, the thick edges of theventilating plate 14 and the asbestos lining will form a hat hollowpocket within the ventilating` plate, into which the open ing 15 at therear of the same will permit air to enter and from which the apertures20 will permit air to pass into the interior of the body of the iron.

Arranged upon the top of the iron cap at the rear of the iron is thehandle support 25 which is fastened to the iron by means of the screw26, which extends through an aperture in said handle support, throughthe iron cap 24, the asbestos lining 23, and through the aperture 22 inthe ventilating plate, into the screw threaded aperture 12 in the base11, thus uniting all of the parts mentioned and holding them in theirappropriate relative position. To the upper end of the handle support 25is iix edly attached the rear end of the handle 27 which is ofappropriate size and form to be used as a grip in manipulating the iron.

The mixer 28 consists of a tube extending through the cap 24, theasbestos lining 23 and through the aperture 19 in the ventilating plate.The said tube extends to the bottom of the iron, against which it restsas shown in Fig. 2. 1f desired a lug, 29, may be formed upon the side ofsaid tube for the purpose of affording additional support for theventilating plate as well as for the purpose of holding the mixer firmlyin place, or other suitable means may be used to accomplish the samepurpose.

The tube of the mixer 28, it will be understood, is arranged practicallyperpendicular to the bottom 2, and the lower end of said tube isprovided with a series of inclined lateral slots, 30, cut into the sideof said l for the purpose of supplying 1t will be understood that whenthe ventif tube, as more fully illustrated in Fig. 2. At the top of themixer tube 28 is provided an aperture, 31, for the entrance of air andabove said aperture is arranged a needle valve comprising a valve seat,32, and a needle, 33, provided with screw threads, 34, arranged inappropriate screw threads (not shown) in the top of said mixer. Thethumb piece 35 is provided for the purpose of rotating the needle 33 tooperate the needle valve in the usual and well known manner. The top ofthe mixer 28 from the valve seat 32 upwardly is solid, with theexception of the space within which the needle valve 33 operates and theduct 3G adapted to convey the gas to the valve. The pipe 37 iscontinuous with the duct 3G and extends through the handle 27, throughthe handle support, 25, and is provided with a screw threaded nipple,38, to which a suitable ilexible rubber tube may be connected gas forheating the iron.

A suitable screw, 39, extends through the iron cap 24, the asbestoslining 23, and the front aperture 22 in the ventilating plate, and intothe screw threaded aperture 5 in the base 4, thus completing thefastening of the parts mentioned in their appropriate relative position.

The stack 40 communicates through the aperture 18 in the ventilatingplate and corresponding apertures in the iron cap and asbestos liningwith the interior of the iron body at the front end of the division 9.Said stack is, of course, hollow and opens cxteriorly at the top 41 forthe exhaust of the burned gases.

An iron of the character described having been provided and gas suppliedthrough a flexible tube to the pipe 37, as hereinbeforc described, theoperation of the device is as follows: The thumb piece 35 is turned toopen the needle valve suliiciently to allow the proper amount of gas toenter the mixer. Said gas is directed downwardly through the tube 28,drawing in with it a proper quantity of air through the aperture 31 anddischarging through the series of inclined slots 30 into the interior ofthe iron body at the front end of the division 8. The gas will then findits way rearwardly through the division 8 and division 10 and outwardlyfrom said division 10 through the division 9 and exhaust through thestack 40. To light the burner a flame is held at the top opening of thestack 40, when the gas will ignite back through the iron to the burnerat the base of the tube 28. r1`he flame will then extend from the slots30 rearwardly through the division 8, strike the base 12 at the rear ofthe iron as well as the sides 3 and be deflected into the division 9 insuch way that all parts of the iron will be very evenly heated. Theburned gases will exhaust through the stack 40, which is the only directopening from the interior of the iron.

The arrangement of the Ventilating plate let with its air inlet, pocketand apertures 20 constitutes an auxiliary mixer. Heretofore muchdifficulty has been experienced in providing sufficient air inself-heated irons for thorough combustion of the gases. In myconstruction, however, air is drawn into the air pocket in theVentilating plate through the rear opening 15 and directed downwardlythrough the apertures 20 into the interior of the iron body at a pointclosely adjacent the burner. The down draft of the air through theapertures 20 will direct the flame from said burner against the bottom 2of the iron, thus, in a practical manner placing the heat where it willbe most effectual. As the air entering through the apertures 20 becomesmixed with the gases and is heated, expanded and burned, it producesincreased heat heretofore unattained in analogous devices, and thelocation of the partition G is such that abundant provision is made forthe expansion of the gases and air as the same pass from the front ofthe division 8 to the rear of the iron and ferward to the front end ofthe division 9.

One of the desirable results of my peculiar construction is that the topof the iron, which is the portion nearest to the hand of the operator,is maintained at a Very moderate temperature by reason of the fact thatthe inflow of air through the Ventilating plate continually cools saidplate and prevents the heat in the iron body from passing through theVentilating plate, asbestos lining and iron cap. It should be noted alsothat by reason of the peculiar construction herein set forth danger fromfire in the use of my gas-heated sad-iron is very remote. There are noopenings in the iron body which will permit contact with flame, andthere are also no openings which will be affected by the movements ofthe operator in such way as to interfere with the proper mixture of airand gas. Heretofore much inconvenience has been experienced in the useof analogous devices by reason of the fact that lateral apertures in thebodies of the irons have permitted the flames on the interior of saidirons to come into contact with the fine embroideries, ruflles and otherreadily inflammable materials upon which it is customary to use irons ofthis class.

lt should be stated that the inclination of the lateral slots 30 in thetube of the mixer 2S aid in directing the flame against the bottom 2 ofthe iron. This feature is adapted to co-act with the down draft of airthrough the apeitures 2O to dispose the flame along the bottom of theiron.

If desired an aperture such as illustrated at42 may be made through theasbestos lining 23 and the iron cap 24, registering with one of theapertures 20 in the Ventilating plate. The purpose of this aperture isto permit the operator to ascertain the quality and condition of theflame by looking through said aperture, and the down draft through saidaperture and the remainder of the apertures 2O will keep the flame onthe interior of the iron away from said aperture so that no danger offire or heat will result from providing said aperture 42. Anotherfeature which it may be desired to provide is the indicator 43, which isa small pin or index lixedly attached to the stem of the needle 33 andadapted to rotate with said needle, the said indicator moving over thegraduations 44 marked upon the top of the mixer tube 28 for the purposeof indicating the amount of opening of the needle valve.

It should be understood that the partition G not only causes the flameto travel in a circuitous way through the body of the iron, but is alsoadapted to conduct heat from the flame to the bottom. The partitionbeing in the midst of the flame is in the most advantageous position forthorough heating of said partition, and the partition being formedintegrally with the bottom 2 conducts the heat to said bottom as do alsothe sides of the body, although the partition being in vthe midst of theflame and baffling the same is much the better adapted to economize heatand thus reduce the necessary consumption of gas.

It will be seen from the above that the structure described andillustrated in the drawings is such as may be easily made, will proveeflicient, and thoroughly adapted to fully accomplish the objects andpurposes for which it is intended.

I claim:

1. The herein described gas heated sad iron, comprising a hollow bodyprovided with continuous and un-apertured sides, a longitudinallydisposed vertical partition extending from top to bottom and separatingthe interior of said body into lateral divisions communicating with eachother, means for conducting a mixture of gas and air into the interiorof said iron body, and means for conducting the burned gases from saidiron body.

2. 1n a gas heated sad iron, a hollow body portion provided with aVertical partition extending from top to bottom and separating theinterior into a horizontally disposed series of communicating divisions,means for conducting gas and air into the division at one end of theseries and means for exhausting` the burned gas and air from thedivision at the other end of the series.

3. In a gas heated sad iron, a hollow body, vertically disposedseparating means extending from top to bottom and dividing the interiorof said body into communicating divisions, means for conducting amixture of gas and air into said body, and means for exhausting burnedgas and air from said body, said conducting` means and said exhaustingmeans being so located with reference to the said divisions that theiiame or" the burning and air will be conducted `progressively throughthe various communicating divisions.

ele. The herein described gas heated sad iron, comprising a hollow body,said body provided with un-apertured sides, a partition arranged in theinterior of said body and extending for a portion of the distance fromend to end of said body, a Ventilating plate arranged within said sidesand upon the top of said partition, said Ventilating plate provided witha cut away portion forming a pocket therein said cut away portion at onepoint extending` through the edge of said Ventilating plate and openingexteriorly, said Ventilating plate also provided with apertures leadingfrom said pocket. to the interior of said body upon one side ot' thepartition therein, a non-heat-conducting lining arranged upon the top ofsaid Ventilating plate and forming the top side ot the pocket in saidplate, a cap arranged upon said lining, means for conducting a mixtureof gas and air into the interior of said body upon one side of thepartition therein at a point near the apertures between the pocket inthe Ventilating plate and the interior of the body, and means forconducting burned gases from the interior of the body, said lastmentioned means being located upon the other side of said partition.

5. ln a gas heated sad iron, a hollow body adapted to contain a flameand a hollow Ventilating top for said body, the hollow portion of saidtop extending substantially throughout said top and constituting an airpocket., said pocket opening exteriorly :tor the inlet of air, and saidtop provided with apertures providing communication between said pocketand the interior of said body, whereby air may be drawn into said pocketthrough said exterior opening and through said apertures into theinterior of the body for the purpose of cooling said top.

G. ln a gas heated sad iron, a hollow body divided by a verticallydisposed partition extending` from top to bottom of said body into ahorizontally disposed series of internal, communicating divisions, meansforconducting` gas and air into the division at one end of the seriesand means for exhausting the. burned and air from the division at theother end of the series, the divisions of the series increasing in sizefrom the point of entrance of said gas and air to the pointotl exhaustof said burned gas and air.

In testimony that I claim the above, I have hereunto subscribed my namein the presence of two witnesses.

JOHN A. WERTZ. lYitnesses ViLLL-xat H. MILLER, JOHN H'. SPONSELLER.

